Astronomers have discovered new clues to a giant and scorching planet orbiting Vega, one of the brightest stars in the sky.<\/p>\n This month The Astrophysical Journal<\/em> Spencer Hurt, a university student at the Department of Astrophysics and Planetary Sciences at Boulder \u2013 Colorado University, was led by Spencer Hurt.<\/p>\n The research focuses on Vega, an iconic and relatively young star. Vega, part of the constellation Lyra (Instrument), has twice the mass of our Sun. This celestial body stands only 25 light-years or about 240 trillion kilometers from Earth; astronomically speaking, pretty soon \u2026<\/p>\n Scientists can also see Vega through telescopes even when the light goes away. This made the star an important research candidate, says Samuel Quinn, the study\u2019s co-author.<\/p>\n \u201cIt is so bright that you can observe it even when the other stars are invisible from sunlight at dusk,\u201d says Quinn, an astronomer at the Harvard & Smithsonian Center for Astrophysics.<\/p>\n Despite the star\u2019s reputation, researchers have yet to find a single planet orbiting Vega. But that could be about to change: Using ten years of observation data from the ground, Hurt, Quinn and their colleagues uncovered a strange signal that might be the first known world of the star.<\/p>\n If the team\u2019s findings are correct; The orbit of this alien planet is so close to Vega that it takes less than 2.5 days on Earth a year. (In contrast, Mercury takes 88 days to orbit the Sun). Moreover, this candidate planet could be the second hottest world known: Surface temperatures reach a scorching level of 2,980 degrees Celsius on average.<\/p>\n Hurt also says the group\u2019s research could make it easier to explore other exotic worlds that might lurk around Vega.<\/p>\n \u201cThis system is a massive system that is much larger than our own solar system,\u201d says Hurt. \u201cThere may be other planets in that system. Let\u2019s see if we can detect them. \u201c<\/p>\n Youth energy<\/strong><\/p>\n Quinn wants to try. Scientists have discovered more than 4,000 exoplanets (planets beyond Earth\u2019s solar system) so far. But few of these revolve around a star that is as bright as Vega or close to Earth. So if there are planets around this star, scientists can look at them in great detail.<\/p>\n \u201cFinding a planet around Vega would be really exciting because it provides opportunities to characterize in the future in ways that planets around fainter stars cannot,\u201d says Quinn.<\/p>\n However, there is a point to note: Vega is a type of star that scientists call a type A star. These objects are generally larger and younger than our sun and can spin much faster. Vega, for example, turns on its axis every 16 hours; Much faster than the Sun\u2019s rotation period, which lasts 27 Earth days\u2026 Quinn says such a fast pace can make it difficult to collect sensitive data on the motion of the star and the planets in its orbit.<\/p>\n To win this celestial game of hide-and-seek, Quinn and her colleagues dug through the data collected from Vega for nearly 10 years by the Fred Lawrence Whipple Observatory in Arizona, USA. The team specifically looked for a sign (a slight change in the speed of the star) that indicates the presence of an alien planet.<\/p>\n \u201cIf there is a planet around a star, that planet can pull the star towards itself and cause it to wobble back and forth,\u201d says Quinn.<\/p>\n Author: Daniel Strain \/ Boulder \u2013 University of Colorado. Translated by: Ozan Zalo\u011flu.<\/em><\/p>\n
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